The most recent global report, Reefs at Risk Revisited (2011), is a high-resolution update of the 1998 global report and includes a first-ever analysis of climate-related threats to coral reefs as well as an assessment of the social vulnerability of nations and territories to reef degradation and loss. Reefs at Risk Revisited in the Coral Triangle (2012) is based on this global report while focusing more specifically on the countries of the Coral Triangle—Indonesia, Malaysia, Papua New Guinea, the Philippines, Solomon Islands, and Timor-Leste.

Coral Reefs of the World Classified by Threat from Local Activities

Coral reefs are classified by estimated present threat from local human activities, according to the Reefs at Risk Revisited integrated local threat index. The index combines the threat from the following activities: overfishing and destructive fishing, coastal development, watershed-based pollution, and marine-based pollution and damage.

KML Data Sets

Base data source: Reef locations are based on 500-meter resolution gridded data reflecting shallow, tropical coral reefs of the world. Organizations contributing to the data and development of the coral reef data include the Institute for Marine Remote Sensing, University of South Florida (IMaRS/USF), Institut de Recherche pour le Développement (IRD/UR), UNEP-WCMC, The World Fish Center and WRI. The composite data set was compiled from multiple sources, incorporating products from the Millennium Coral Reef Mapping Project prepared by IMaRS/USF and IRD.